Xiaomi’s low-end Redmi 9A smartphone, powered by the MediaTek Helio G25 processor, remains a popular choice for users who value autonomy and affordability. However, over time, owners often notice that MIUI is slowing down and apps are opening longer than usual. It’s a natural process for entry-level devices where hardware resources are limited, but things can be improved significantly with software.
The main reason for the slowdown is the accumulation of system debris, background processes and constant updates of applications that become “heavier” with each version. System optimization does not require deep programming knowledge, but requires a careful approach to settings. In this article, we will discuss proven ways to return the device to its former sharpness.
Before you go to radical measures, such as resetting to factory settings, it is worth trying a comprehensive cleaning and fine-tuning of display parameters. Proper management of CPU and RAM resources allows you to extend the comfortable life of the gadget. The MediaTek Helio G25 processor has 8 cores, but for stable operation it requires free storage space of at least 15% of the total volume.
Analysis of the current situation and cleaning of the storage
The first step to speed up the Redmi 9A is to free up the internal drive. When the memory is almost full, the system has no place to place temporary cache files, which leads to noticeable friezes and long responses. Check how much free space is left by going to Settings → About Phone → Storage.
Special attention should be paid to the folders of messengers such as Telegram and WhatsApp, which tend to grow to gigabytes due to automatically stored photos and videos. Built-in cleaning tool often does not see these files, so you should use the file manager or the built-in “Cleanup” function in the application “Security”.
Do not ignore the cache of long-deleted applications or residual files after updating the system. Regular file system hygiene is the basis for the performance of any android.
- 🗑️ Remove duplicate photos and screenshots that are no longer needed.
- 📂 Transfer heavy media files to a memory card or cloud storage.
- 🧹 Use the built-in cleaner once a week to delete temporary files.
- 📱 Check the Recycle Bin in the Gallery and File Manager by deleting everything permanently.
⚠️ Note: Do not delete system folders with names like Android, MIUI or data manually through a file manager if you are not sure of their contents, this can lead to system instability or loss of application data.
Once the space is freed, the system will have the necessary buffer for operational operations, which is especially true for models with 32 GB of internal memory, where user space is extremely limited.
Optimization of MIUI interface and animations
MIUI is famous for its visual richness, but it's animations that often create the illusion of slow work on budget processors. Reducing the scale of animation or completely turning it off will visually speed up the transitions between screens. To access these settings, you need to activate the developer mode.
Make 7 quick clicks on the MIUI version in the About Phone menu. After the "You're a developer" notification appears, go to Additional → For developers. Find the drawing section and change the window animation scale, transitions and animation duration to 0.5x or "No animation."
The effect of this procedure is noticeable immediately: the interface becomes more twitchy, but the response to commands is instantaneous, and this is one of the most effective ways to subjectively speed up the smartphone without losing functionality.
It’s also worth turning off unnecessary visuals, such as live wallpapers and widgets with constant updates to the home screen, which consume GPU and CPU resources even in the background.
Background Process Management and Autoboot
Many apps in the Android ecosystem tend to run with the system and stay active in the background, consuming RAM and battery power. On the Redmi 9A with its 2 or 3 GB of RAM, this is critical. Autoboot control allows you to prevent unnecessary programs from starting automatically.
Go to the battery settings and find “App Battery Consumption.” Pick heavy apps you rarely use, and set a background limit. This won’t delete the app, but it won’t work when you’re not using it.
In addition, you can find AutoStart in the Apps menu. Disable this option for all programs except instant messaging, where it is important to get notifications instantly. Social networks and games do not need a constant background presence.
- 🚫 Turn off autoplay for all games and rarely used utilities.
- 🔋 Set energy saving mode for background processes in battery settings.
- 📵 Close apps through the multitasking menu if they aren’t needed right now.
- 📉 Use the “light” versions of apps (Lite) if they are available in the Play Market.
☑️ Background process verification
Regular monitoring of running processes helps to identify “gluttonous” applications that can slow down the entire device. If you notice that the phone is warming to idle, check this settings section.
Expansion of RAM and work with SD-card
The memory extension feature, known as Memory Extension, allows you to use part of the internal storage as virtual RAM. On the Xiaomi Redmi 9A, this option can be available depending on the firmware version. It is located in the About Phone menu or in additional memory settings.
The use of a microSD card also affects performance. If the card has a low speed class, the system can index files for a long time or slowly download data from it. UHS-I higher.
However, it is worth considering that virtual memory is slower than physical RAM. Enabling this feature makes sense if you constantly face the crash of applications due to lack of memory, but it will not add magic speed to the processor.
| Parameter | Standard RAM | Expanded memory | Impact on speed |
|---|---|---|---|
| Type of memory | LPDDR4X | eMMC 5.1 (part of storage) | Average. |
| Reading speed | Tall. | Low/Mediocre | Notable decline |
| Stability | Tall. | Depends on the disk filling. | Variable |
| Recommendation | Leave it as it is. | Only in case of shortage | Individually |
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If you use a memory card to store applications, make sure it is formatted as internal storage, although this can slightly reduce its overall write speed.
For people who are actively working with documents and photos, the best solution is to store media on the map and system files on the internal drive, which will reduce the fragmentation of the main memory.
System update and resetting
Xiaomi periodically releases updates for its devices, which often include performance optimization and bug fixes. Check for updates in the Settings menu → About phone → System update. Installing the latest stable version of MIUI can solve lag problems.
If the software methods don't work, the radical but effective way is to completely reset to factory settings. Be sure to back up important data before you do, as all files will be deleted, which puts the phone back out of the box.
Once you reset, you don't have to install hundreds of applications. You can bring them back gradually, watching the system react. Often, it's the set of programs that you've installed that creates a load that a budget processor can't handle.
⚠️ Warning: Before resetting, make sure that the battery is at least 50%, and it is better to connect the device to the charger. Interrupting the reset process can damage the system partition and the need to flash the device.
Risks of using third-party accelerators
Clean installation is the best way to get rid of the accumulated registry errors and software conflicts that have been accumulated over the years, and for the Redmi 9A, this can be a second wind.
Additional hidden settings for advanced
For those who aren’t afraid to experiment, there are deeper optimization methods, such as disabling unnecessary system services through ADB (Android Debug Bridge) frees up resources that are normally reserved for features not used in your region.
You can also try changing the minimum screen width (DPI) in the developer settings, reducing this value will make the interface elements smaller, but they will fit more on the screen, which visually unloads the desktop.
Using a No Borders theme or standard theme without heavy graphic elements also reduces the load on the graphics accelerator. lightweight launchers can replace the heavy MIUI shell, but this requires customizing access rights.
- 🛠️ Disable analytics and advertising services in privacy settings.
- 🌐 Use the "Only" mode. 4G» or "Only" 3G», If the signal is unstable, the modem does not waste resources on network search.
- 🎨 Simplify the desktop by leaving only the necessary widgets.
- 🔇 Turn off keyboard vibration and system buttons to save micro resources.
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A comprehensive approach combining memory cleaning, animation shutdown and autoboot control can improve the Redmi 9A’s performance by 30-40%.
Remember that hardware limitations are not going away, and today’s heavy games may not go away even after all the optimizations, but for everyday tasks — social media, calling and navigation — the phone will be much more responsive.